Connection for heating pads



July 3, 1934. J. H. BROWNE CONNECTION FOR HEATING PADS Filed May 9, 1952ATTO R N EY Patented July 3, 1934.

UNITED STATES PATEN OFFICE 2 Claims.

This invention relates to heating pads for vulcanizers of the characterset forth in my application, filed July 14, 1931, Serial No. 550,803,now Patent No. 1,855,092 and has for the primary object, the provisionof an improved connection between the heating medium and the pad wherebythe heating medium may be easily and quickly attached and detached fromthe pad and which permits the heating medium to be secured at anydesired place on the pad.

Another object of this invention is the provision of a connection of theabove stated character which will efficiently transmit heat from theheating medium to the pad and due to its construction it will not beaffected by excessive heat thereby assuring a proper connection betweenthe heating medium and the pad to permit detachment of said devicewithout undue effort on the part of the operator.

With these and other objects in view, this invention consists in certainnovel features of construction, combination and arrangement of parts tobe hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had tothe following description and accompanying drawing, in which Figure 1 isa side elevation partly in section illustrating the improved connectionbetween the heating medium and the pad and constructed in accordancewith my present invention.

Figure 2 is a vertical sectional view illustrating the same.

Figure 3 is a bottom plan view illustrating the connection applied tothe heating medium.

Figure 4 is a top plan view illustrating the same.

Figure 5 is a fragmentary perspective view illustrating the adjustablemounting of one of the fastening elements on the connecting plate.

Figure 6 is a fragmentary plan view illustrating the vulcanizing pad.

Referring in detail to the drawing, the numeral 1 indicates a flexibleheating pad for vulcanizing purposes and adopted to be heated by anelectrical heating medium 2 consisting of a head 3 in which is locatedan electrical heating coil 4. The pad 1 and heating medium 2 form thesubject-matter of the co-pending application, above referred to.

The heat applying face of the head 3 is overlain by an attaching platethe ends of which project beyond the ends of the head. The plate 5 isdetachably secured to the head 3 by fasteners 6, the heads of which arecounter-sunk in the plate. The plate becomes highly heated by contactingwith the head 3 and from the heat derived I from the electrical coil 4so that when brought into engagement with the pad 1, the heat will betransmitted to said pad by the plate. The ends of the plate 5 areprovided with slots '7 surrounded by grooves 8 opening outwardly throughthe ends of said plate. Fasteners 9 extend through the slots '7 and arecapable of having a limited sliding movement relative thereto as well asfree rotation with respect to said plate and adapted to be threaded intopairs of openings 10 formed in the pad. The walls of the openings arescrew-threaded to match the threads of the shanks 11 of the fasteners 9.The fasteners 9 are provided with knurled finger pieces 12 to facilitatethe rotation of said fasteners for attaching and detaching the platefrom the pad. The fasteners 9 are provided with annular grooves 13fitting between the walls of the slots 7 and form spaced annular bearingportions 14 and 15. The annular bearing portions 15 ride within thegrooves 8 while the annular bearing portions 14 bear against the outerface of the plate thereby rotatably and slidably securing the fastenersto the plate causing the latter to be adjusted so as to fit certainpairs of openings within the pad.

The heating element connected to the pad 1 by the connector abovedescribed permits the pad to be efficiently heated at any desired placethereon by the heating element or medium and permits the latter to bereadily detached from the pad when desired. The attaching plate beingfirmly secured to the head of the heating medium and contacting with aconsiderable area of the pad permits the heat from the heating medium tobe readily transmitted to the pad and the form of fasteners fordetachably connecting the plate to the pad will not be affected byexcessive heat, consequently permitting the operator to easily andquickly detach the heating medium from the pad whenever desired.

While I have shown and described the preferred embodiment of myinvention, it will be understood that minor changes in construction,combination and arrangement of parts may be made without departing fromthe spirit and scope of my invention, as claimed.

Having thus described my invention, what I claim is:-

1. In combination with a vulcanizing pad and a heating medium, anattaching plate overlying and in contact with the heat transmitting faceof the heating medium and detachably secured to through the slots to bethreaded in certain of said disposed between the Walls of the slots andproviding annular bearing portions engaging opposite faces of the platewithone of the annular portions of each fastener lying within the grooveof the plate to rotatably and slidably secure the fasteners to the plateand to prevent the annular portions from interrupting the resting of theplate evenly upon the pad'. I

JAMES H BROWNE.

openings, said fasteners having annular grooves

